Cortech Systems Limited
Cluster stats
Netblocks12
Cluster ID191312890
RegistryAFRINIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 16 shared RIR contact/maintainer handles
Registry names 7 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
12 0 netblocks since 2026-07-05
2026-07-05 peak 12 2026-07-06

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
102.204.12.0/23 Cortech Systems Limited BGP ANNOUNCED ● high
102.204.12.0/24 Cortech Systems Limited BGP ANNOUNCED ● high
102.204.13.0/24 Cortech Systems Limited BGP ANNOUNCED ● high
196.60.114.48/32 Cortech Systems Limited PEERINGDB ASSIGNED ● high
196.223.21.124/32 Cortech Systems Limited PEERINGDB ASSIGNED ● high
203.131.67.104/29 CORTECH-PH APNIC ASSIGNED NON-PORTABLE ● high
2001:43f8:60:1::124/128 Cortech Systems Limited PEERINGDB ASSIGNED ● high
102.204.12.0/23 Cortech Systems Limited AFRINIC ALLOCATED PA ● low
102.204.12.0/24 CORTECH-NET1 AFRINIC ASSIGNED PA ● low
102.204.13.0/24 CORTECH-NET2 AFRINIC ASSIGNED PA ● low
194.192.4.0/24 CORTECH RIPE ASSIGNED PA ● low
2c0f:7fc0::/32 Cortech Systems Limited AFRINIC ALLOCATED-BY-RIR ● low

Network trust

what's this?
RPKI hygiene: B how networks compare →
83.3% of checked blocks have valid RPKI ROA coverage (10 of 12)
Possible discrepancies (1)

These blocks are registered to Cortech Systems Limited but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

194.192.4.0/24 /24 authorized for AS3292 — TDC Holding A/S

NIC Handles

AE135-AP AFRINIC-HM-MNT AS329654 AS329654 CM111-AFRINIC CSL6-MNT CSL6-MNT DK-NIC DUMY-RIPE DUMY-RIPE EW15-AFRINIC EW15-AFRINIC +4 more